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Significant Components of Current Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Deferred Tax Assets [Line Items] |  |
Deferred profit-sharing contingent commissions | $ 9,490 | $ 11,124
Net operating loss carryforwards | 5,786 |
Accruals and reserves | 9,132 | 8,739
Total current deferred tax assets | $ 24,408 | $ 19,863

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